Setting die



Nov. 17; 1931. L. R. CARLEY 1,832,764 SETTING DIE I Filed June 22. 1929 Z] Z fo /P6 /INVENTOR Z3 L 20 e000 0rqy Patented Nov. 17, 1931 UNITED snares PATENT orricr LEONARD R. CARLEY, OF WATERTOEVN,CONNECTICUT, ASSIGNOR T0 PATENT BUTTON COMPANY, OF WATERBUlR-Y, CONNECTICUT, A CORPORATION OF CONNECTICUT I SETTING DIE Application filed June 22,

This invention relates to rivet setting dies and particularly to a die adapted to set rivets which have pierced a metal wall and raised a burr, as for example in the attachment of fastener members. An object of the invention is the provision of improved metlr 0d and means of attaching such fastener members so that the burrs will be removed in the operation of setting the rivet whereby a neat, sanitary and elficient attachment is produced. 7

Other objects will be apparent from the following description of a representative embodiment of the invention illustrated in the accompanying drawings wherein:

Figure 1 is a sectional view of a fastener assembly attached to a piece of fabric, the View showing the setting pin or die employed;

Figure 2 is an exploded sectional view showing the parts before assembly;

Figure 3 is a section showing the fastener member pierced by the rivet and the die in position to set the rivet;

Figure 4 is a plan View of a fastener member pierced by a, rivet showing the burrs formed by piercing; and

Figure 5 is an end view of the setting die.

Referring to the drawings, it will be understood that when a. rivet 10 (which may be of the tack, staple or other variety) pierces the metal wall of a fastener member 12 (which may be of the button, separable fastener or other variety), burrs 18 (Figures 3 and 4;) are produced by the shanks 11 of the rivet.

Such burrs are unsightly; tend to accummulate dirt or other unsanitary matter; are likely to injure apparel or cause personal. in.- jurv; are an evidence of a poor joint which is likelv to become loose; and in the case of separable fasteners, are apt to project outwardlyso far as to prevent proper math". the fastener parts. It is highly dosir that these burrs be eliminated but heretofore no convenient tool has been provided for the purpose, especially; not one capable of set ting the rivet and removing the burrs by and the same operation.

Herein I have shown a setting pin or die 20 1929. Serial No. 372,829.

for turning both of the prongs of staples and for removing the burrs which they form in the fastener members. This setting pin must be of relatively small diameter for it must enter the open cupped portion of the fastener members to reach the staples. Heretofore so far as I am aware no setting die has been produced or designed capable of entering this limited opening and at the same time turning the burrs about the staple shanks.

This pin has a pair of grooves 21 sloping toward the center of their length and also sloping toward a partition wall 22. The

grooves are sufliciently long and deep as shown in Figure 1 to accommodate all of the bent portion of the staple shanks. The edges of the grooves are thus allowed to reach the burrs to turn them. To assist in turning the burrs, the outer edge of the pin is flattened as shown at 23 in Figure 5. The grooves 21 also are made somewhat wider at the center than is required for the diameter of the staple shanks and the inwardly sloping portions of the rooves at these oints serve to.

prevent the burrs bending outward as the flattened faces 23 come into action.

From the several views it will be seen that the setting die pushes the burrs toward and down the shanks of the rivets thus closing the openings made by the shanks to form a tight joint and effectually accomplishing the aims and objects sought.

YVhile one embodiment of the invention has been described with particularity, it wiil be apparent that changes may be made within the spirit of the invention as set forth in the appended claim.

I claim as my invention:

A setting die for use with a cupped fastener member having an imperforate bottom wall pierced in attaching by the prongs of a staple, said die comprising a body portion adapted to enter the opening of said cupped portion, said die having a cupped portion at its end and a central partition wall extending across the cupped portion to thereby form a pair of parallel grooves which continuously slope toward their length and unbrolrenly toward the center partition wall, said grooves being suf-' ficiently large to receive the entire bent ends of said staple prongs, a flat surface about the periphery of said grooves for preventing the burrs bending outwardly as the die is used, and the said grooves forcing any burrs made by the prongs downwardly and inwardly about said prongs of the staple.

In testimony whereof, I have signed my name to this specification this 14th day of June, 1929.

LEONARD R. CARLEY. 

